Worksheet on Magnetic Energy

Worksheet on magnetic energy contains various types of questions.

The important information will help us to the answer the questions given below.

Electromagnet: A temporary magnet, developed within a magnetic substance by electrical energy.

Magnet: A piece of iron having a special power to attract other iron bodies towards it.

Demagnetization: Removal of the magnetic properties of a magnet.

Magnetization: Method of developing magnetic properties in a magnetic substance.

Magnetic substance: The substances, which are attracted by a magnet and can be magnetized by magnetic induction.

Magnetic pole: The two opposite ends of a magnet, which have the strongest power of attraction.

I. Write true or false of the following:

(i) Very high temperature makes a magnet weak.

(ii) Magnetic energy flows through a copper wire.

(iii) A magnet, wrapped with a plastic sheet cannot attract a piece of iron any more.

 (iv) South pole of a magnet always attracts the south pole of another magnet.

 (v) When a piece of iron is kept near a very strong magnet it becomes hot.

 

II. Fill in the blanks: 

(i) The property of ________ helps us to distinguish between a pair of magnets and a pair of iron bars.

(ii) South pole of a bar magnet repel the ________ pole of another magnet.

(iii) An iron bar placed near a magnet behaves like a ________.

(iv) North pole of a magnet attracts ________ pole of another magnet.

(v) The door of a refrigerator get tightly closed by ________.

 

III. Answer the following questions:

(i) If a pin head is held near the mid-point of a magnet bar, what will happen?

(ii) If a piece of wood is kept near a magnet bar, what will happen?

(iii) How can you separate iron filings from sand?

(iv) What will happen if the North pole of a magnet is held near the South pole of another magnet?

(v) Ron have two magnets and a iron bar. How can you identify the iron bar out of it?

(vi) What happens when a piece of iron is held near a bar magnet?

(vii) How can we transform an iron bar into a magnet bar?

(viii) How can we transform a magnet bar into an ordinary iron bar?

(ix) Suppose if we keep a magnet in fire for sometime what will happen?

(x) What will happen to an electromagnet if you disconnect the power supply?

Fifth Grade

From Worksheet on Magnetic Energy to HOME PAGE